Drag-scraper.



J. S. & E. H. McKINNEY.

DRAG SORAPER. APPLICATION FILED 001214, 1912 Patented July 29, 1913.

llNlTED STATES PATENT @FFTEE.

JOSEPH S. MGKINNEY AND EDWARD H. MCKINNEY, OF MENLO, KANSAS.

DRAG-SGRAPER.

Specification of Letters Patent.

Patented July 29, 1913.

T0 all whom. it may concern:

Be it known that we, J osnrrr S. MOKINNEY and EDWARD H. MCKINNEY,citizens of the United States, residing at Menlo, in the county ofThomas, State of Kansas, have invented certain new and usefulImprovements in Drag-Scrapers; and we do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to drag scrapers of the type commonly employed inthe construction of roads and the excavation of ditches.

The object of the invention resides in the provision of a drag scraperwherein the scoop element is free to revolve to effect the dumping ofthe scraper.

A further object of the invention resides in the provision of a scraperof the type named in which the handles are pivotally connected to thescoop and adapted to be antomatically locked against pivotal movementduring the normal operation of the scraper and released during therevolving of the scoop upon dumping so as to permit said handles to passthrough the draft yoke or bail of the scraper during the revolving ofthe scoop.

A still further object of the invention resides in the provision of ascraper, wherein the under side of the scoop is provided with a V-shapedrunner having its apex disposed relatively near the forward end of thescoop and acting as a fulcrum to readily allow the operator to controlthe depth of out.

With the above and other objects in view the invention consists in thedetails of construction and in the arrangement and combination of partsto be hereinafter more fully described and particularly pointed out inthe appended claims.

In describing the invention in detail reference will be had to theaccompanying drawings wherein like characters of reference denotecorresponding parts in the several views, and in which- Figure 1 is aplan view of a scraper constructed in accordance with the invention.Fig. 2 a side elevation of same. Fig. 3 a view similar to Fig. 2 showingthe position of the parts when the scoop member is in full dumpingposition. Fig. 1 a view simi lar to Fig. 2 showing the position of theparts when the scoop member has been almost completely revolved. Fig. 5a rear view of what is shown in Fig. 1, and Fig. 6 a detail perspectiveview of the handle which cooperates directly with the gravity controlledlatch.

Referring to the drawings, A indicates generally the scoop element ofthe scraper which includes side members 10 and 11, a bottom 12 and aback member 18. Pivotally connected to the side members 10 and 11adjacent the forward ends of the latter are the arms of the usualU-shaped draft bail or yoke B. Secured to the inner faces of the sidemembers 10 and 11 of the scoop adjacent the rear ends of said sidemembers are the arms of a U-shaped fulcrum member (1, the connectionbetween said fulcrum member and the side members 10 and 11 of the scoopbeing of the rigid type and said fulcrum member extending upwardly fromthe scoop. Secured to the outer faces of the side members 10 and 11 andto the arms of the fulcrum member C are corresponding curved rockers 14and 15 respectively for a purpose that will presently appear. Secured tothe outer faces of the side members 10 and 11 and extending rearwardlyof the scoop A are corresponding brackets 16 and 17 respectively and inthese brackets is rotatably mounted a shaft 18.

Secured to the end of the shaft 18 adjacent the side member 11 is ahandle 19, while another handle 20 is secured to the end of the shaft 18adjacent the side member 10. The handle 20 is provided with an extension21 which terminates at its free end in an outwardly directed finger 22.

Disposed in spaced relation to the outer face of the side member 10 andhaving its terminals secured to an arm of the fulcrum member C and tothe side member 10 re spectively is a plate 23 between which and theadjacent arm of the fulcrum member 0 the extension 21 of the handle 20is adapted to be moved as the shaft 18 is rotated. Pivotally mountedbetween the plate 23 and the side member 10 for cooperation with thefinger 22 of the handle 20 is a gravity controlled latch 24:. This latchis so positioned and mounted that when the scoop A is in normal positionas shown in Fig. 2 it will cooperate with the finger 22 and lock thehandles 19 and 20 and the shaft 18 against rotation and permit thescraper to be controlled through the medium of said handles during thenormal operation thereof.

Surrounding the shaft 18 is a spring 25 one end of which is anchored tothe shaft 18 and the other end to the back member 13 of the scoop andsaid spring constantly tends to rotate the shaft 18 so as to move thefinger 22 into engagement with the latch 24.

Secured to the under side of the bottom 12 of the scoop is a V-shapedrunner 26 the apex of which is disposed relatively near the forward endof said bottom. This apex of the runner 26 serves as a fulcrum wherebythe forward end of the scoop may be readily elevated through the mediumof the handles 19 and 20 when the scraper is cutting at too great adepth. This runner 26 also enables the forwardend of the scoop to beelevated when said scoop is loaded so that none of the contents will bespilled as the scraper is being drawn along thegro-und to the localitywhere it is desired todump same. Again the runner 26 requires less draftwhile drawing the loaded scoop from place to place as it rides thescraper over soft ground whereas formerly the scraper would plow throughsuch soft ground and require greatly incrcaseddraft to effect itsmovement.

hat we claim is 1. In a scraper, a U-shaped draft bail, a scooprevolubly mounted between the arms of said bail, handles pivotallymounted on said scoop and normally locked against pivotal movement, andmeans for automatically releasing the handles during the revolving ofthe scoop whereby said handles are free to swing to a positionpermitting the passage through the bail.

2. In a scraper, a U-shaped draft baiha scoop revolubly mounted betweenthe arms of said bail, handles pivotally mounted on sald scoop andnormally locked against pivotal movement, means for automaticallyreleasing the handles during the revolving of the scoop whereby saldhandles are free to swing to a position permitting their passage throughthe bail, and means for automatically locking the handles againstpivotal movement when the scoop has made one complete revolution.

3. In a scraper, a U-shaped draft bail, a scoop revoluloly mountedbetween the arms of said bail, handleshaving a common pivotal.connection with said scoop, a latch mounted on the scoopnormallycooperating with the handles to secure same against pivotalmovement, and means for releasing said latch from looking relation 'tothe handles during the revolving of the scoop whereby said handles arefree to swing to a position permitting their passage through the bail.

1-. In a scraper, a U-shaped bail, a scoop revolubly mounted betweenthearms of said JOSEPH S. MCKINNEY. EDWVARD H. MCKINNEY.

Witnesses:

E. C. I-Irma, H. V. CHRISTENSEN.

Copies of this patent'may be obtained-for five cents each, by addressing*the Commissioner of "Patents, Washington,'D. 0.

